I have heard people use smoke test but not nearly at the same rate an LLM uses.

If a repo is bare of CLAUDE.md but mentions a smoke test in a commit in the last year I assume it to be LLM written.

Can't remember when I first heard it, but I searched my email and got a pile of results from 2012 and 2009. It's possible there's earlier in there somewhere but 2009 was a busy year so I got bored of clicking the "more results" button...